尿液细胞外囊中的甘油性控制蛋白在移植T细胞中介排斥过程中升高
P Y M Leung1,2, A S Graver3,4,5, M Katerelos4
1Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Parkville, Australia. mia.leung@austin.org.au.
BMC nephrology
|June 6, 2025
概括
尿液细胞外囊泡 (UEV) 在T细胞介导排斥 (TCMR) 的移植受体中显示出糖分酶的增加. 这一发现表明一种潜在的非侵入性生物标志物用于监测全移植健康和损伤.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 移植免疫学 移植免疫学
- 生物化学 生物化学
背景情况:
- 精确,频繁和不太侵入性地监测脏全移植健康状况对于移植管理至关重要.
- 代谢重编程,从脂肪酸氧化转向糖解,与损伤有关.
- 由T细胞介导的排斥 (TCMR) 主要影响管间,表明局部代谢变化.
研究的目的:
- 调查TCMR期间尿液细胞外囊泡 (UEV) 中糖分控制蛋白的表达是否增加.
- 探索基于UEV的生物标志物的潜力,以进行移植状态的非侵入性评估.
主要方法:
- 涉及脏移植接受者的前性观察性研究.
- 尿样采集在活检前和UEV通过差异超离心隔离.
- 用于测定囊泡标记物,糖分控制蛋白 (PFKFB2,PFKFB3,PFKFB4) 和CD3的免疫洗;在TCMR和非TCMR组之间比较结果.
主要成果:
- 在UEV中增加的果酸-2-激酶/果糖-2,6-双酸酶4 (PFKFB4) 与TCMR (p=0.018),管炎 (p=0.037) 和间歇性炎症 (p=0.047) 有显著关联.
- 增加的PFKFB2,PFKFB3和PFKFB4与整体炎症和间歇性纤维化有关.
- 三种或更多的甘油性标记物的组合对TCMR进行了歧视,ROC AUC为0.73.
结论:
- 在UEV中限制速率的葡萄糖酶水平的增加与管间炎症和移植中的纤维化相关.
- 这些发现表明状上皮质中脏糖解的增强,反映了本地损伤.
- 基于UEV的糖解蛋白分析可能为评估移植病理提供一种新的非侵入性策略.
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